Corrugated hopper door for railway cars



G. G. GILPIN CORRUGATED HOPPER DOOR FOR RAILWAY CARS Oct. 19

Filed m. ,5) 1925 Patentedyofct. 19, 7

' GARTH e c hhhehhhh'noryhh fern-wh z car having a "fdoor forr'rffing a part of the door is provided with hinges "aclja'eent one 'of its "elge's and is capable'ofib'eing dropped fees-hun open so thaltthfe load in'tlis'oliargi ng slides 01" passes over gtheup? pe'r surface of the door. i v raising the door to the closed position and 'aiiyfineans for looking a' n'clreleasing the door filiiy he'einployecl with niy device. I

'(loor for this "purpose ni'ust be yery strong ancl durable because: iist', 'itfisfa aha "as s'iichjinustfsristain the-load as well asthe 'i'ni'pla'f't blow "o is in ino'ti'o'n; lof'atled 'fif'oni' chutes'or 't'i'pple's from a height of ten feet oi lno ola'in shell'huoke'ts are frequently used to forgthese buckets over the doors. Fourth, "when the loor suddenly "wines to rest after beingklropped,

it 'is not only subjected to a severe shock" but it 'niust sustain theseyere iinpaet thrust of t e load which 'of course "follows the door. fEiftli, "as" the lo ac'lfis theoretically equally relist'r iliut'eil, the door inust be strong over its entire "a'ie'a and must be Capable of transmitting the resulting stresses to the ,.car "hotly without Inuo h defieot'ion no substantial 'clistortion. v Any loen'cling of the door or drooping of the corners 'woulclcau'se a leak of the lading, especially of such fine f 'iY b d g.

material as sancl, chat-s, "etc.

I .or :wh pihg hhight interfere with tlie leojfn lte' losih 'and lookingof the Cloo'ri is it has as m ch to h a o Q wf it .does o thereof 7 be will be allowed to carry.

An object of the invention isto make a door for a railway dump" car by forming a metallio plate with its central portion depressed to form a panel with a continuous stiffening web surrounding it, which panel is formed with corrugations to: stifien it and to carry any load imposed. thereupon he *i-hvhhhhh relates to railway ahhip;

Any, 'r'neans of.

to 'afny door of a freightcar, s'ueh' asdrop bottom generaljservlc'e-cars, nsect the an-oi the floor Of the (hr 1 v l? the load when the car' Seeon'd, the car is frequently re, causing the load to be dropped gh'reuy "upon 'the doors. Third,

unlo'a'tl sucfh ears'anclit is not uncommon j to"r e'st iipon and dragv V v The dooriopenings a'r'e haul a ton of paying freight, 1 it is 'irnperative thatthe earand any part "as light as possible. Further V nio'r'e',thetotal weight of the car and freight the op j while other shortercorrugations '8 traverse a'pafi t -of the i panel merge into the;

for contact with j-the' associated parts e canto nakeit l'a'ding proof.- 'This rnar *1 a l portion may "be the door;

mm or hi 'ns a man b rho I ooMrA-NY, 0F on1ohoo, ILLlNOIS, ;A oonronarro'u or IDELLAW'ABEQ j,

. o i360: anged'to further stiffen I The hdvhhthge's of my deer-hie hpphhhhihr or hopper jbotto n coal car's, fe't'cq In the olr'awmg's:

Fig. '4 is'an enl'argetl sec ah of-the data:

Fig. 5 shows a similar io rrnf" To illustrate drie-aclaptation hi hiyflyiee,

"I have shown a'so-callecl general seii ice drop botto'rngon'cldla ear wherein the inajor portionfof the floor oofisis 7 's'ur'rbii ncleiil,,lo'y center construction 1';'s1cle wall 2 and diaphragins =-3-.f In iiorina-l or closed po'sr' tion "the {fioo'r completely closes this opening and in an isja, trifle winger- 5h all sides? than the "opening so as to provide a lap joint between the the ear *frhhh'e' Inemhers v cloors are hinged to "the center eonstructron and are supported adj 'a'cefit the; sidefti ll biythe raising ef -lock ng ni'eoliaiiisnn hhy ehhnhh'ieht sh hp nia'y he" used. to "innit the. ahwhwhha inoyein'e'ntof the deer,

. In my chasernation the "central port-i61 or plate is pressed to forni fainan unending web 5 whioh "surrounds a panel 6. This phi-lei i s reihorehdwith corrugations or integral ribs, some otwhfich (7) tra; verse Tthje, "panel osite"por ions of the coiitin'iiousweb;

"nately but their relative number and posi-- tion may be diversified to suit conditions.

*T he shorter corrugations 8 are preferably shallower than the longer corrugations 7 {The remaining portion ,9 of the continuous Web extends continuously and uninterruptin transmittingthe load from the corrugatrons to the frame of the-car.

The corrugations may be of greater'or less depth than the depression forming the cons tinuous web but areoi 'less' depth than the web 5 where they merge into it; in other words, they merge into a portion of the web.

The marginal portion 4 (or portions) may be provided with flanges 10 so as to further stiffen the sides or the door against deflection under load and to stiffen the entire door against buckling or distortion.

The web, marginal portion and flange may be straight or flat and connected by arcs of small radii (as shown in Fig. 5 or such parts may be formed on curves and connected by arcs of large radii (as shown in Fig. and still come within the scope of this invention.

' It is understood that the corrugation may extend-toward the hinge edge of the door,

and still come within the scope of the inven tlon, and, furthermore, while I have described and claimed the door made 01" a plate, it isunderstood that it may be made of one or more united plates and still come within the scope of the invention.

1. In combination with the other elements,

of a railway dump car; a door made of a metallic plate formed-with a marginal portion surrounding a continuous web which surrounds a panel, said panel provided with long corrugations which traverse the panel and merge into the opposite portions of the web, said panel also provided withshorter corrugations which traverse a part of the panel and merge into the panel.

2. In combination with the other elements of a railway dump car; a door made of a metallic plate formed with a marginal portion surrounding a continuous web which surrounds a panel, said panel provided with long corrugations which traverse the panel and merge into the opposite portions of the web, said panelalso provided with shorter,

' shallower corrugations which traverse a part of the panel and merge intothe panel.

In combination with the other elements of a railway dump car; a door made of a metallic plate formed with a marginal portion surrounding -a continuous web which surrounds a panel, said panel provided with long corrugations which traverse the panel and merge into the opposite portions of the web, said panel also provided with shorter corrugations which traverse a part of the "panel and merge into the panel, said long corrugations being alternatewith said shorter corrugations.

4-.yIn combination withthe other elements of a railway dump car; a door made of'a metallic plate formed with a marginal portion surrounding a continuousweb which surrounds a panel, said panel provided with long corrugations-which traverse the panel and merge into the opposite portions of the web, said panel also provided'with shorter, shallower corrugations which traverse a part ofthe panel and merge into the panel, said web being ofless depth than the web where they merge into it, said panel also provided with shorter corrugations which traverse a part or the panel and merge into the panel.

6. In combination with the other elements 01": a railway dump car; a door made of a metallic plate formed with a marginal portion surrounding a continuous web which surrounds a panel, sald marginal portion provided with a flange substantiallyperpendicular. thereto, said panel provided with long corrugations which traverse the panel and merge into the opposite portions of the web, I said panel also provided with shorter corrugations which traverse a part of the panel and merge into the panel.

7. In combination with the other elements of a railway dump car; a door made of a metallic plate formed with a marginal portion surrounding a continuous web which surrounds a panel, said marginal portion provided with a flange substantially perpendicular thereto, saidpanel provided with long corrugations which traverse the panel and merge into the opposite portions of the web being of less depth than the web where they merge into it, said panel also provided with shorter corrugations which traversea part of the panel and merge into the panel.

GARTH G. GILPIN. 

